The 1st two pictures you posted are the dual-polarity trombetta solenoid for the hydraulics pump. Follow the thick center wire back to the row of breakers (covered by red rubber boots) in picture # 3. The reset button is on the breaker with the other thick wire, right next to the one that goes to the hyrdraulics. It's also possible the resettable breaker could be the one with the thick wire coming from the cutoff switch.
In any case, this reset button is teeny-tiny and hard to see. Sometimes it's easier to feel it.